BERLIN — A top commander of a Nazi SS-led unit accused of burning villages filled with women and children lied to American immigration officials to get into the United States and has been living in Minnesota since shortly after World War II, according to evidence uncovered by The Associated Press.

Michael Karkoc, 94, told American authorities in 1949 that he had performed no military service during World War II, concealing his work as an officer and founding member of the SS-led Ukrainian Self Defense Legion and later as an officer in the SS Galician Division, according to records obtained by the AP through a Freedom of Information Act request.

The Galician Division and a Ukrainian nationalist organization he served in were both on a secret American government blacklist of organizations whose members were forbidden from entering the United States at the time.

Though records do not show that Karkoc had a direct hand in war crimes, statements from men in his unit and other documentation confirm the Ukrainian company he commanded the massacre of civilians and suggest that Karkoc was at the scene of these atrocities as the company leader. Nazi SS files say he and his unit were also involved in the 1944 Warsaw Uprising, in which the Nazis brutally suppressed a Polish rebellion against German occupation.

Polish prosecutors announced Friday after the release of the AP investigation that they will investigate Karkoc and provide “every possible assistance” to the U.S. Department of Justice, which has deported dozens of suspected Nazi war criminals for lies in immigration papers.

The AP evidence of Karkoc’s wartime activities also has prompted German authorities to express interest in exploring whether there is enough to prosecute. In Germany, Nazis with “command responsibility” can be charged with war crimes even if their direct involvement in atrocities cannot be proved.

Karkoc refused to discuss his wartime past at his home in Minneapolis and repeated efforts to set up an interview, using his son as an intermediary, were unsuccessful.

Efraim Zuroff, the lead Nazi hunter at the Simon Wiesenthal Center in Jerusalem, said that based on his decades of experience pursuing Nazi war criminals, he expects that the evidence showing Karkoc lied to American officials and that his unit carried out atrocities is strong enough for deportation and war-crimes prosecution in Germany or Poland.

“In America, this is a relatively easy case: If he was the commander of a unit that carried out atrocities, that’s a no-brainer,” Zuroff said.

Karkoc lives in a modest house in northeast Minneapolis in an area with a significant Ukrainian population. Even at his advanced age, he came to the door without help of a cane or a walker. He would not comment on his wartime service for Nazi Germany.

“I don’t think I can explain,” he said.

Members of his unit and other witnesses have told stories of brutal attacks on civilians.

One of Karkoc’s men, Vasyl Malazhenski, told Soviet investigators that in 1944 the unit was directed to “liquidate all the residents” of the village of Chlaniow in a reprisal attack for the killing of a German SS officer, though he did not say who gave the order.

“It was all like a trance: setting the fires, the shooting, the destroying,” Malazhenski recalled, according to the 1967 statement found by the AP in the archives of Warsaw’s state-run Institute of National Remembrance, which investigates and prosecutes German and Soviet crimes on Poles during and after World War II.

“Later, when we were passing in file through the destroyed village,” Malazhenski said, “I could see the dead bodies of the killed residents: men, women, children.”

In a background check by U.S. officials on April 14, 1949, Karkoc said he had never performed any military service, telling investigators that he “worked for father until 1944. Worked in labor camp from 1944 until 1945.”

However, in a Ukrainian-language memoir published in 1995, Karkoc states that he helped found the Ukrainian Self Defense Legion in 1943 in collaboration with the Nazis’ feared SS intelligence agency, the SD, to fight on the side of Germany — and served as a company commander in the unit, which received orders directly from the SS, through the end of the war.

It was not clear why Karkoc felt safe publishing his memoir, which is available at the U.S. Library of Congress and the British Library and which the AP located online in an electronic Ukrainian library.

Karkoc’s name surfaced when a retired clinical pharmacologist who took up Nazi war crimes research in his free time came across it while looking into members of the SS Galician Division who emigrated to Britain. He tipped off AP when an Internet search showed an address for Karkoc in Minnesota.

“Here was a chance to publicly confront a man who commanded a company alleged to be involved in the cruel murder of innocent people,” said Stephen Ankier, who is based in London.

The AP located Karkoc’s U.S. Army intelligence file and got it declassified by the National Archives in Maryland through a FOIA request. The Army was responsible for processing visa applications after the war under the Displaced Persons Act.

The intelligence file said standard background checks with seven different agencies found no red flags that would disqualify him from entering the United States. But it also noted that it lacked key information from the Soviet side: “Verification of identity and complete establishment of applicant’s reliability is not possible due to the inaccessibility of records and geographic area of applicant’s former residence.”

Wartime documents located by the AP also confirm Karkoc’s membership in the Self Defense Legion. They include a Nazi payroll sheet found in Polish archives, signed by an SS officer Jan. 8, 1945 — only four months before the war’s end — confirming that Karkoc was present in Krakow, Poland, to collect his salary as a member of the Self Defense Legion. Karkoc signed the document using Cyrillic letters.

Policy at the time of Karkoc’s immigration application — according to a declassified secret U.S. government document obtained by the AP from the National Archives — was to deny a visa to anyone who had served in either the SS Galician Division or the OUN. The U.S. does not typically have jurisdiction to prosecute Nazi war crimes but has won more than 100 “denaturalization and removal actions” against people suspected of them.

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